TY  - RPRT
TI  - Maps of estimated nitrate and arsenic concentrations in basin-fill aquifers of the southwestern United States
AU  - Kimberly R. Beisner
AU  - David W. Anning
AU  - Angela P. Paul
AU  - Tim S. McKinney
AU  - Jena M. Huntington
AU  - Laura M. Bexfield
AU  - Susan A. Thiros
PY  - 2012
DO  - 10.3133/sim3234
UR  - https://pubs.usgs.gov/publication/sim3234
ID  - sim3234
ER  -